*: adapt the `show columns`, `show index` and `rename` for column privilege

[CbcWestwolf]

What problem does this PR solve?

Issue Number: ref #61706

Problem Summary:

What changed and how does it work?

Adapt the show columns, show index and rename for column privilege This PR pick pkg/executor/show.go, pkg/executor/simple.go, pkg/parser/auth/auth.go, tests/integrationtest/t/executor/show.test and tests/integrationtest/r/executor/show.result in https://github.com/pingcap/tidb/pull/61638

Check List

Tests

• [ ] Unit test
• [x] Integration test
• [ ] Manual test (add detailed scripts or steps below)
• [ ] No need to test

  • [ ] I checked and no code files have been changed.

Side effects

• [ ] Performance regression: Consumes more CPU
• [ ] Performance regression: Consumes more Memory
• [ ] Breaking backward compatibility

Documentation

• [ ] Affects user behaviors
• [ ] Contains syntax changes
• [ ] Contains variable changes
• [ ] Contains experimental features
• [ ] Changes MySQL compatibility

Release note

Please refer to Release Notes Language Style Guide to write a quality release note.

None

[codecov[bot]]

Codecov Report

Attention: Patch coverage is 90.00000% with 3 lines in your changes missing coverage. Please review.

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Additional details and impacted files

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integration	36.9961% <83.3333%> (?)
unit	72.6778% <76.6666%> (?)

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Components	Coverage Δ
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parser	∅ <0.0000%> (?)
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[CbcWestwolf]

/retest

[CbcWestwolf]

/retest

[CbcWestwolf]

/retest

[CbcWestwolf]

/retest

[ti-chi-bot[bot]]

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[CbcWestwolf]

So is this the same behavior as MySQL, modify index only check CREATE_INDEX, no matter whether the index references a non-privilege column?

@tiancaiamao Yes, only INDEX privilege is needed.

[ti-chi-bot[bot]]

[LGTM Timeline notifier]

Timeline:

• 2025-06-19 07:14:43.272987703 +0000 UTC m=+342335.996166685: :ballot_box_with_check: agreed by tiancaiamao.
• 2025-06-19 12:56:19.336667398 +0000 UTC m=+362832.059846380: :ballot_box_with_check: agreed by wjhuang2016.

[ti-chi-bot[bot]]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: tiancaiamao, wjhuang2016, ystaticy

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